For 7S,8S NiMH battery For 8.4V,9.6V NiMH battery For airsoft gun battery pack World-wide 100-240V input CE UL certified Suitable for NiMH 7S, 8S NiMH battery Suitable for 8.4V,9.6V NiMH batteryBattery used in airsoft gun Advanced MCU control ,- delta V function 5 hours timer control Ramp-up function for over-discharged battery pack Full protection for short-circuit & reverse polarityAuto-detect ...